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Question
The length of the perpendicular drawn from the point P(a, b, c) from z-axis is
Options
\[\sqrt{a^2 + b^2}\]
\[\sqrt{b^2 + c^2}\]
\[\sqrt{a^2 + c^2}\]
\[\sqrt{a^2 + b^2 + c^2}\]
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Solution
The length of the perpendicular drawn from the point P(x, y, z) from z-axis is given by \[\sqrt{y^2 + x^2}\] Thus, the length of the perpendicular drawn from the point P(a, b, c) from z-axis is \[\sqrt{a^2 + b^2}\]
Hence, the correct answer is option (a)
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